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This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.

Chemical and radiological sample results

MS0460013 , West Marion Water Association

19 of the 56 analytes this system has been tested for have been detected at least once, across 241 samples on record.

The other 37 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.

Across all 241 samples on record, detections range from October 8, 2003 to July 7, 2026. These figures cover the whole record.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

What has been detected, ever

Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.

Every analyte ever detected for West Marion Water Association, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Copper, Free 1022 Inorganic Chemical 60 of 60 results Jul 31, 2007 Sep 6, 2023
Lead 1030 Inorganic Chemical 32 of 60 results Jul 31, 2007 Sep 6, 2023
Barium 1010 Inorganic Chemical 22 of 22 results Oct 8, 2003 Oct 8, 2025
Fluoride 1025 Inorganic Chemical 21 of 22 results Oct 8, 2003 Oct 8, 2025
TTHM 2950 Organic Chemical 19 of 19 results Jul 12, 2004 Aug 18, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 14 of 20 results Aug 20, 2007 Aug 18, 2025
Chloroform 2941 Organic Chemical 14 of 14 results Aug 20, 2007 Aug 18, 2025
Bromodichloromethane 2943 Organic Chemical 11 of 14 results Aug 20, 2007 Aug 18, 2025
Dibromochloromethane 2944 Organic Chemical 10 of 14 results Aug 20, 2007 Aug 18, 2025
Chromium 1020 Inorganic Chemical 10 of 22 results Mar 8, 2004 Jul 9, 2025
Dichloroacetic Acid 2451 Organic Chemical 9 of 14 results Jun 15, 2010 Aug 18, 2025
Trichloroacetic Acid 2452 Organic Chemical 9 of 14 results Aug 13, 2013 Aug 18, 2025
Sodium 1052 Inorganic Chemical 7 of 7 results Sep 17, 2019 Jul 7, 2026
Gross Alpha, Incl. Radon & U 4002 Radionuclide 5 of 10 results Mar 12, 2012 Oct 10, 2012
Nickel 1036 Inorganic Chemical 4 of 22 results Sep 27, 2022 Apr 7, 2025
Sulfate 1055 Inorganic Chemical 4 of 4 results Oct 8, 2003 Mar 8, 2004
Xylenes, Total 2955 Organic Chemical 1 of 22 results Apr 1, 2025 Apr 1, 2025
Monobromoacetic Acid 2453 Organic Chemical 1 of 14 results Sep 14, 2020 Sep 14, 2020
Nitrite 1041 Inorganic Chemical 1 of 48 results Aug 22, 2005 Aug 22, 2005

No date range is applied: this list draws on every sample on record. Show the last two years only.

The most recent samples, result by result

The table below lists 191–200 of 241 samples, newest first — collected July 31, 2007 to January 11, 2010. The summary above covers all 241.

73 results from the 10 samples listed here: 9 detected, 64 not detected. Across the whole record it is 254 of 1,224. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Chemical and radiological sample results for West Marion Water Association, every result from 191 to 200 of 241 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Jan 11, 2010
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
100115-021IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 11, 2010, sampling point TF101 Arsenic 1005 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.004917 mg/l , sample collected Jan 11, 2010, sampling point TF101 Barium 1010 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 11, 2010, sampling point TF101 Cadmium 1015 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 11, 2010, sampling point TF101 Chromium 1020 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
0.165 mg/l , sample collected Jan 11, 2010, sampling point TF101 Fluoride 1025 EPA method 380-75WE Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 11, 2010, sampling point TF101 Mercury 1035 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 11, 2010, sampling point TF101 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Jan 11, 2010, sampling point TF101 Selenium 1045 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 11, 2010, sampling point TF101 Antimony, Total 1074 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 11, 2010, sampling point TF101 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jan 11, 2010, sampling point TF101 Thallium, Total 1085 EPA method 200.8 Jan 1, 2008 – Dec 31, 2010
Collected
Sep 15, 2009
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
090916-009VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Dichloromethane 2964 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Benzene 2990 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Toluene 2991 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF102 Styrene 2996 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Collected
Sep 15, 2009
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
090916-008VO
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 1,2,4-Trichlorobenzene 2378 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Cis-1,2-Dichloroethylene 2380 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Xylenes, Total 2955 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Dichloromethane 2964 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 O-Dichlorobenzene 2968 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 P-Dichlorobenzene 2969 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Vinyl Chloride 2976 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 1,1-Dichloroethylene 2977 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Trans-1,2-Dichloroethylene 2979 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 1,2-Dichloroethane 2980 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 1,1,1-Trichloroethane 2981 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Carbon Tetrachloride 2982 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 1,2-Dichloropropane 2983 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Trichloroethylene 2984 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 1,1,2-Trichloroethane 2985 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Tetrachloroethylene 2987 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Chlorobenzene 2989 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Benzene 2990 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Toluene 2991 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Ethylbenzene 2992 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Not detected below 0.0005 mg/l Method Detection Limit , sample collected Sep 15, 2009, sampling point TF101 Styrene 2996 EPA method 524.2 Jan 1, 2005 – Dec 31, 2010
Collected
May 4, 2009
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
090505-035NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected May 4, 2009, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected May 4, 2009, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected May 4, 2009, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
May 4, 2009
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
090505-034NI
Laboratory
MSDH Lab
Not detected below 0.25 mg/l Minimum Reporting Level , sample collected May 4, 2009, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.2 mg/l Minimum Reporting Level , sample collected May 4, 2009, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Not detected below 0.05 mg/l Minimum Reporting Level , sample collected May 4, 2009, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2009 – Dec 31, 2009
Collected
Jun 25, 2008
Sampling point
TF101 Treatment Plant T101
Sample type
Routine
Lab sample
080626-035NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jun 25, 2008, sampling point TF101 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jun 25, 2008, sampling point TF101 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jun 25, 2008, sampling point TF101 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Collected
Jun 25, 2008
Sampling point
TF102 Treatment Plant T102
Sample type
Routine
Lab sample
080626-004NI
Laboratory
MSDH Lab
Not detected below 0.1 mg/l Minimum Reporting Level , sample collected Jun 25, 2008, sampling point TF102 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.08 mg/l Minimum Reporting Level , sample collected Jun 25, 2008, sampling point TF102 Nitrate 1040 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jun 25, 2008, sampling point TF102 Nitrite 1041 EPA method 353.2 Jan 1, 2008 – Dec 31, 2008
Collected
Aug 20, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
070821-007HA
Laboratory
MSDH Lab
0.0025 mg/l The agency recorded which kind of limit this result was below, but stored 0.000000000 as the limit itself, which is not a level. The type is published and the value is null. What the limit was is not on record. Whether the result was a detection is a separate column: read resultType. , sample collected Aug 20, 2007, sampling point MRT000 Total Haloacetic Acids (Haa5) 2456 EPA method 552.2 Jan 1, 2005 – Dec 31, 2007
Collected
Aug 20, 2007
Sampling point
MRT000 Max. Res. Time
Sample type
Routine
Lab sample
070821-008TH
Laboratory
MSDH Lab
3.16 ug/l , sample collected Aug 20, 2007, sampling point MRT000 Chloroform 2941 EPA method 524.2 Not recorded
Not detected below 1 ug/l Minimum Reporting Level , sample collected Aug 20, 2007, sampling point MRT000 Bromoform 2942 EPA method 524.2 Not recorded
1.85 ug/l , sample collected Aug 20, 2007, sampling point MRT000 Bromodichloromethane 2943 EPA method 524.2 Not recorded
1.12 ug/l , sample collected Aug 20, 2007, sampling point MRT000 Dibromochloromethane 2944 EPA method 524.2 Not recorded
6.13 ug/l , sample collected Aug 20, 2007, sampling point MRT000 TTHM 2950 EPA method 524.2 Jan 1, 2005 – Dec 31, 2007
Collected
Jul 31, 2007
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
070801-430PB
Laboratory
MSDH Lab
0.1495 mg/l , sample collected Jul 31, 2007, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008
0.0008 mg/l , sample collected Jul 31, 2007, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2006 – Dec 31, 2008

Routine (10).